Muscular System

7. process that requires oxygen to provide energy
8. the cells that compose skeletal muscle
10. the connection point between a motor neuron and a muscle fiber
14. these muscle fibers are very resistant to fatigue & are capable of prolonged, sustained contractions
16. these muscle fibers have very little resistance to fatigue and are used for intense movements of short duration
17. the cytoplasm of a muscle fiber
20. basic functional unit of striated muscle fibers
21. this type of muscle tissue is located in the walls of hollow internal structures such as blood vessels, airways, the stomach, & the intestines
22. an electrical signal that stimulates a muscle contraction
24. these muscle fibers have a moderate resistance to fatigue
25. when muscle tissue contractions & relaxations are not under conscious control

1. this type of muscle tissue is attached to bones & moves parts of the skeleton
2. extra oxygen that is consumed at rest after a period of exercise to pay back the oxygen that was used to provide energy during activity; also known as recovery oxygen uptake
3. the name for a muscle that is damaged and lost its tone
4. when muscle tissue contracts & relaxes by conscious control
5. alternating light & dark protein bands found in some muscle tissues
6. process that provides energy without using oxygen
9. an involuntary sustained muscle contraction that helps to keep muscles firm but not producing movement; this is what allows postural muscles to do their job without active muscle contractions to keep us upright
11. the inability of a muscle to contract forcefully after prolonged activity
12. the branch of medical science concerned with the prevention or correction of disorders of the musculoskeletal system
13. extension of muscle tissue that functions as an attachment for muscle to bone
15. this type of muscle tissue is found only in the heart and forms the bulk of the heart wall
18. reddish pigment that gives skeletal muscle its color & stores oxygen until it is needed by the cell
19. the scientific study of muscles
23. a brief contraction of all of the muscle fibers in a motor unit in response to a single action potential in its motor unit